利用重磁资料研究深部构造与金矿成矿关系

本文探讨了在山西省利用区域重磁资料研究深部构造与金矿成矿的关系及成矿环境的有利标志。研究结果表明，山西省的区域重、磁场以北东、北北东向为特点，中太古界为主要磁源层。根据磁场特征．用统计方法可将前寒武纪构造分为若干隆起和断陷，它们对金矿成矿起到了一定控制作用。另外，利用区域重力资料计算了山西省莫霍面深度，结果表明，莫霍面由东南向北西逐渐变深，莫霍面和岩石圈的结构控制了不同类型岩浆岩的展布，为选择金矿成矿有利地区提供了依据。并提出叠加型异常是重要的找矿靶区。

STUDY ON THE RELATION BETWEEN DEEP-SEATEDSTRUCTURE AND GOLD MINERALIZATION USINGGRAVITY AND MAGNETIC SURVEY DATA

This paper discusses a study on the relation between deep--seated structure and goldmineralization, and favourable criteria for metallogenetic environment using regional gravityand magnetic survey data. Study results show that regional gravity and magnetic fields inShanxi Province are characterized by NE and NNE--trending and the Middele Archaeozoic isthe main magnetic source bed. According to the magnetic field, the statistical method wasused to divide Precambrian structure into some uplifts and fault depressions which controlledthe gold mineralization. In addition, the Moho depth in Shanxi Province was calculated usingregional gravity data, the results of which have indicated that Moho discontinuity shows anincreasing tendency from southeast to northwest. The structure of Moho discontinuity andlithosphere have controlled the distribution of different types of magmatic rocks, providingthe basis for selecting favourable areas of uranium mineralization. It is indicated that stackedanomalies are the main prospecting targets.